georger

Must be ESP because I came to that suspicion about 5 mins ago after finding a number of FAA directives about seating capacities allowed for different 727-100 configurations, amongst the airlines. Long lists of factors specific to each type of 727-100 configuration, as per each airline. So, it seems reasonable to assume we can modify a standard seating chart to fit what we know about where Cooper sat in18C at the back, starboard side, near the stew's station (which I have located on one chart I have), in front of the rear galley and Lav area (also shown on charts I have accumulated). Let me see if I can put a graphic together and we can go from there ... would be nice to have. [edit additional note]: from wikipedia - ". . . he handed a note to a young flight attendant named Florence Schaffner,[11] who was seated in a jumpseat attached to the aft stair door, situated directly behind and to the left of Cooper's seat. "

Russ Calame in his book describes Cooper's seating arrangments similarly, namely starboard side of the airplane. He talks quite a bit about it, and drew a diagram to compare how McCoy also sat in the same relative place, although he had a different seat number due to a different configuration in that 727, and had the re-fueling truck park in the same position as the one for Cooper. Calame says the seat postion for both crimes was ideal for monitoring the refueling, the placement of the air stairs, and the coming and going of folks. The seat Cooper chose, and McCoy, is one more piece of evidence of a well-planned operation. I have more data, not sure what it adds up to. Sluggo does rely on Pasternak for the seating numbers (at least I think he does.). He refers to Pasternak's citations on this, in any event. I am now beginning to wonder if the whole series BOEING 727-51. BOEING 727-51C. BOEING 727-59. BOEING 727-61 ... were not all 727-100s ? They were not 727-200s because that was a longer version of the 727. Every 727-51 at any Boeing site I have searched says the 727-51 had a 134 seat capacity. Examples below: http://www.airport-data.com/manuf/BOEING;95.html Tail Number Year Maker Model C/N Engine Seats Location N463US 1964 Boeing 727-51 18799 3 134 FL, United States N465US 0000 Boeing 727-51 18801 3 134 FL, N467US 0000 Boeing 727-51 18803 3 134 FL, http://www.taxiwayalpha.com/fleets/profile.php?aircraft=874 : N467US - Boeing 727-51 - Northwest Airlines :. Registration N467US View more images of N467US Serial 18803 Line Number 137 Capacity 134 seat First Flight 09.04.65 Delivery Date 22.04.65 Model 727-51 Airline Northwest Airlines Status Left Fleet All Registrations N467US Northwest Airlines N838N Piedmont AL N838N United Technologies lsd N838N Flight Dynamics lsd N838N Key AL N29KA Key AL rr N29KA AvSales-Key AL N29KA WrldCpL-Key AL Comments N407US NTU, involved in the D.B.Cooper hijack and parachute escape 24.11.71 Maybe NWA reconfigured the seats to the #94 reported by Pasternak/Sluggo ? But, I still cannot find anmy seating charts for N467US or any other 727-51. I will just put this out on the deck for anyone to play with. I brought this up before but nobody was interested. Traveling south ~V23 with the direction west out Cooper's right hand window, the Moon may have been visible above the cloud layer? The Moon's position out Cooper's west window was a clock for Cooper if he could see it and knew how to read it ... if he had any landmarks and was familiar with the area Portland- Vancouver, the Moon's position relative to his viewing angle was also a clue as to his latitude at points in time ... this is basic navigation.

Have you even seen the video? Talked to the maker? Probably not. I know nothing about it. Just what I saw and heard at Youtube. The script does stick very closely to the old FBI profile and expands it only slightly. Just go see the video before making 200,000 judgements which will roll up at Tina Bar 2 days later ?

Russ Calame in his book describes Cooper's seating arrangments similarly, namely starboard side of the airplane. He talks quite a bit about it, and drew a diagram to compare how McCoy also sat in the same relative place, although he had a different seat number due to a different configuration in that 727, and had the re-fueling truck park in the same position as the one for Cooper. Calame says the seat postion for both crimes was ideal for monitoring the refueling, the placement of the air stairs, and the coming and going of folks. The seat Cooper chose, and McCoy, is one more piece of evidence of a well-planned operation. It sounds like a valid comparison, for two different people - planning in common. I confess I really dont know the difference between the 727-100 and 727-51 but obviously a different number of seats and different placement. I would love to see a seating chart if someone has one. At different times in this forum we have debated what Cooper could see, or other behaviors related to his position(s) in the plane at different times. He had an intial position (aisle seat) to attract a stew. He then moved to a window position. At landing he got up and went to the lew. When he came back where did he sit or stand - because when Hancock came back through for her purse Cooper was up and already had a chute on. Did he then sit with a chute on and which seat, or did he ever sit again? Did he go to a window and look out after departing SEA? (Its my understanding he asked the blinds be pulled as the plane sat on the ground at SEA? Ckret and others assembled the notion that DB did not know where he was (could not know?). I want to know if he did an 5a8 ything that could be taken as DB trying to find out where he was, or the time. His view above the cloud deck out some window while flying V23 could be crucial in this regard - * I saw a vid on Youtube I have never seen at http://www.youtube.com/watch?v=cGkhZ6D4gUY The video is a new profile for Cooper which mentions linguistics and offers a revised sketch. Snowmman may have mentioned this before and I missed it. I am told the the video was produced after discussion with the FBI. The vid references the FBI for anyone having new information - Im also going to attach a nice photo of N467US. I will also attach a photo of what is purported to be the interior of a 727-51. (I have searched all over the net for a seating photo for a 727-51 or N467US and found nothing ... I sure hope Sluggo has something?)

HAHO was the 2nd Mo'i of Maui. HAHO NUI. He was the titular chieftain or king of the island of Maui. He is believed to have succeed his father Paumakua. He and his descendants only had control over portions of Western Maui and relied on the allegiance of the many district chiefs. Among the Maui chiefs from the close of the Hawaiian migratory period, when the Hawaiians journeyed backed and forth from their Polynesian homelands, not many names arrest the attention of the antiquarian student. The position of Moi of Maui appears to have descended in the line of Haho, the son of Paumakua-a-Huanuikalalailai. From the tenor of the ancient legends, East Maui, at the time, comprising the districts of Koolau, Hana, Kipahulu, and Kaupo, was at times under independent Mois, and the legends mention six by name. From Eleio to Hoolae, the latter of whom was comtemporary with Haho's descendant, Piilani, and whose daughter married Piilani's son, Kiha-a-Piilani. Theses district chiefs' allegiance to the West Maui Mois was always precarious, even in later times. The island of Molokai does not appear to have acknowledged the sway of Haho or his descendants during this period, and for some time after, only obeyed its own independent chiefs, the ancestors of Kalanipehu and descendants of Keoloewa and Nuakea. The island of Lanai, however, and its chiefs, though often in a state of revolt, appera always to have recognized the Moi of Maui as their suzerain. He married the high chiefess Kauilaianapa who bore him a son. Haho was succeeded by his son Palena. [edit] Legacy Haho, has gone down to posterity and been remembered by all succeeding ages throughout the group as the founder of the Aha-Alii, an institution which literally means the congregation of chiefs, and, in a measure may be compared to a heralds' college; and to gain admission into which it was incumbent on the aspirant to its rank and privileges to announce his name, either personally or through an accompanying bard, and his descent either lineal or collateral, from some one or more of the recgonised, undisputed ancestors ("Kupuna") of the Hawaiian nobility, claiming descent either on the Nanaulu or Ulu line. "Once a chief always a chief", was the Hawaiian rule of heraldry, and no treason, crime, or lesser offence ever affected the rank or dignity in the Aha-Alii of the offender or of his children. There was no "bill of attander" in those days. There were gradations of rank and tabu within the Aha-Alii, well understood and seldom infringed upon. No chief could fall from his rank, however his possessions and influence might vane; and none could rise higher himself in the ranks of the Aha-Alii than the source from which he sprang either on mother's or father's side; but he might in several ways raise the rank of his children higher than his own, such ae by marriage with a chiefess of higher rank than his own, marrying with a sister, or by their adoption into a family of higher rank than that of the father. The privileges and prerogatives of the Aha-Alii were well defined and universally known, both as regards their intercourse with each other and their relation to the commonalty, the Makaainana. Their allegiance or fealty to a superior chief was always one of submission to superior force, of personal interest, or of family attachment, and continued as long as the pressure, the interest, or the attachment was paramount to other considerations; but the slightest injury, affront, or slight on the part of the superior, or frequently the merest caprice, would start the inferior chief into revolt, to maintain himself and his possessions by arms if able, or he fled to some independent chief of the other islands, who almost invariably gave him an asylum and lands to live on until a change of affairs made it safe to return to his former home. A chief of the Aha-Alii, if taken captive in war, might be, and sometimes was, offered in sacrifice to the gods, but he or his family were never made slaves if their lives were spared. And if the captive chief was of equal or higher rank than his captor, he invariably received the deference and attention due to his rank, and his children not unfrequently found wives or husbands in the family of the conqueror. A chief of the Aha-Alii was of right entitled to wear the insignia of his rank whenever he pleased: the feather wreath, the Lei-hulu (feather cloak or cape), the Ahu-Ula (ivory clasp, the Palaoa. His canoe and its sail were painted red, and he wore a pennon at the masthead. Among the members of the Aha-Alii it was not unusual that two young men adopted each other as brothers, and by that act were bound to support each other in weal or woe at all hazards, even that of life itself; and if in after life these two found themselves, in war time, in opposing ranks, and one was taken prisoner, his life was invariably spared if he could find means to make himself known to his foster-brother on the opposite side, who was bound to obtain it from the captor or the commanding chief. And there is no instance on record in all the legends and traditions that this singular friendship ever made default. Such were some of the leading features of the Aha-Alii, which all existing traditions concur in asserting was instituted by Haho about twenty-five generations from the reign of King Kalakaua. It arose, probably, as a necessity of the existing condition of things during this migratory period, as a protection of the native aristocracy against foreign pretenders, and as a broader line of demarcation between the nobility and the commonalty. It lasted up to the time of the conquest by Kamehameha I., after which this, as so many other ancient customs, good, bad, or indifferent, gradually went under in the light of newer ideas, new forms of government, and new religion. By the days of the Kingdom of Hawaii there were no more Aha-Alii, though there was a " House of Nobles," in which the foreign-born number ten to nine of the native-born, and few of these latter recall to the minds of the common people the great historical names of former days, the great feudal lords on this or that island, who, still within the memory of the then living people, could summon a thousand vassals or more to work their fields and do their bidding. [edit] References Abraham Fornander, An Account of the Polynesian Race: Its Origin and Migrations, Rutland, VT: Charles E. Tuttle Company, 1969. Page 28-30, 78-79 "The Stories & Genealogies of Maui," http://www.mauiculture.net/mookuauhau/index.html, Accessed 9 Oct 2004.

If you are sitting in the Plane like Cooper and facing the Cockpit which side of the plane was Cooper on? I have some confusion regarding this. Quade asked the same question clear back in Ap 2008 and never got an answer (below). Apparently nobody (here) knows. quade Moderator Apr 4, 2008, 10:27 AM Post #1085 of 12689 (2213 views) Re: [SafecrackingPLF] knife? [In reply to] Do you know of a seating plan diagram for the 727-100 available on-line anywhere? Why does it matter? Well, , , people have gone on at length about what Cooper could see or not see, blah blah blah, and turns out we dont even know what seat he was sitting in in relation to the rest of the airplane. Someone may know, but isnt saying: N467US was a 727-51 as distinct from a 727-100 or 727-200 which I think was a smaller craft with fewer seats than a 727-100.(I attach a nice chart for 727-200 seating which doesnt apply here). Sluggo (at his Research website) has no charts and seems to rely on Pasternak's account which cites: "94 seats - 66 coach and 28 first class" and 'sat at the back of the plane' in 18C. Ckret confirms 18C wherever that was on the plane. Boeing however cites the 727-51 as accomodating 134 seats? All accounts I have ever read say seat "18C". All accounts I have ever read place Cooper at the back of the plane close enough to the stew's seat at the back of the plane that Cooper was able to lean out and speak to Schafner, telling her to read the note he had given her (in an envelope). Every depiction I have ever seen shows Cooper and a stew sitting on the starboard (right side) of the back of the plane ... Cooper in the aisle seat ... and immediately after he got Schafner's attention advising her to read his note, Flo and Tina go forward to Scott, and Scott asks Flo to go back and sit 'with the passenger', and when Flo does go back to Cooper "he has moved over from the aisle seat to the window" (starboard window which would be west side window as 305 flew along V23 going south), as per the below: " The next time she (Schafner) passed he (Cooper) motioned for her to come closer and whispered to her, “You'd better read that. I have a bomb." He nodded toward the briefcase in his lap. Schaffner went to the galley, read the note and shared it with fellow attendant Tina Mucklow. They hurried to the cockpit where Capt. Scott had a look. At 3:13 PM the pilot radioed Sea-Tac Flight Operations with this message Capt. Scott sent Schaffner back to the hijacker. She sat in Cooper's aisle seat. He had moved to the window. Cooper opened his briefcase wide enough to give her a glimpse of its contents. (Sluggo from his website)." Ckret never did answer Quade's question or speak on this topic. Snowmman seemed to question my account repeated above ? He seems to have his own ideas ? Sluggo may have something he has never chimed in with ?

Georger - your historical point taken. But I think Bruce has shed light on it above as well. I wonder how many of the returning servicemen went on to finish high school or enter college - I assume there was some kind of 'mature student' exemption from a high school diploma at many colleges at the time? Wouldnt it be interesting to know what materials Braden chose to read. ? It's no critcsm of Bruce I'm making - just a simple observation. Lots of people read. What they read may be significant. In a very real sense people have to be educated to 'get' education, ie. see the value in education. Reading and the desire to read is a skill most people learn very early. It goes to who Braden was or was-not. If people noticed Braden reading they probably also noticed what his selections for reading were? And if not why not, and does this affect the reliability of their reporting about Braden. Braden evidently turned to reading as a diversion. He may also have turned to truck driving for the same reason (Snowmman asked why Braden would turn to truck driving vrs Nuclear Physics or mass murdering Congolese!). Diversion. A method of coping with stress. Truck driving can be very soothing. Would Braden turn to hijacking as a therapeutic diversion while also needing money - this is basically what Snowmman has been implying all along. Did Braden read Tintin? Surely somebody would know that!

I wonder how many of the returning servicemen went on to finish high school or enter college - I assume there was some kind of 'mature student' exemption from a high school diploma at many colleges at the time? I dont have the stats on reternees completing HS or going on to college, but a large number did because jobs becoming more technical required it after 1950. I do know for the mostpart no exemptions were given if one lacked a HS diploma. People made up the time by one means or another or worked and obtained what became known as a GED (General Education Degree) which some colleges accepted and some did not. Some colleges and universities admited people having a GED on a Provisional basis, but quite often did not give full credits until the probationary period was completed if one maintained a B average or higher. The attitude in higher education was a little unforgiving and people either made up the time or dropped out or were forced out if they could not meet the standards. Thus the term: Ivory Tower! There were a few exceptions to this (eg City College Queens NYC, Parsons College . . .) basically small coleges which almost died during WWII who saw an opportunity with returning vets and developed special programs to assist vets finishing HS and gaining a college degree. Vets flocked to places like this after the war, but by around 1965 for example diplomas from Parsons College was worthless ... and the era of Community Colleges was gaining strength especially for 2 year technical programs which supply the technical trades... Today, very few universities and private colleges will accept a community college diploma at face value, or give even 1/2 credit for course work done at a community college.

You have to have a historical perspective to answer this - it comes down to economics/war/jobs. Most of the guys who fought in WWII came out of the Great Depression of the 1930s. The same for World War I with the Great-Great Depression of the 1890s. America was an agrarian nation both times. Conditions in 1900-10 and the 1930s were very bad. People tended to have large families. It was not uncommon for children to be out on their own by age 16 or even younger; a precident going clear back into the 1700s. Jobs were scarce but the military offered employment. War was employment. Education took second place and was a luxery. It was not uncommon for people to lie about their age (the military realy didnt care especially in WWI). It was very common for people to enlist and wait for 6 mos. to a year for their orders to come through but when orders did come through people dropped everything and left under penalty of Law, whatever they were doing. A relative of mine did this in 1939 after enlisting in '38. He got his orders and dropped everything and missed the last 'two weeks' of his senior year just prior to graduation and his highschool refused to grant him a graduation certificate. Things like this were very common and disruptive to people's lives... The first real break in this scenario occured during WWII with a string of Acts passed by Congress promoting education (Lanham Act 1941, Ntl Ed. Act '44, Voc Ed Act '46, Impact Aid Act of 1950, and National Defense Education Act of 1958) ... it would be out of this context that Braden may have availed himself of some education amounting to 2 years of college credit. NDEA loans covered full tuition and room and board at 1% per with the principle forgiven in yearly segments if a person became a teacher and worked at teaching for 5 years or more. Tuitions back then only amounted to an average $247 per semester in most goiod Land Grant colleges - the same institutions today require $10,000+ in tuition per semester! It might interest you to know that many larger corporations like Rockwell, Honeywell, GE, etc are recommending something tantamount to a revitalisation of the former NDEA program to help bolster math and science education in the United States, at a time when college education has become basically unaffordable to our population -

bull·shit (blsht) Vulgar Slang n. 1. Foolish, deceitful, erroneous and boastful language. 2. Something worthless, deceptive, or insincere. 3. Insolent talk or behavior. v. bull·shit also bull·shat (-sht) or bull·shit·ted (-shtd), bull·shit·ting, bull·shits v.intr. 1. To speak foolishly or insolently. 2. To engage in idle conversation. v.tr. To attempt to mislead or deceive by talking nonsense. Untrustworthy missleading speech. adj.

Bullshit. (all of it)

JD also said that Ted liked to smoke a pipe, and would just go off by himself, have a smoke, and read a book. “He was a loner. He would just go off by himself.” JD also described Ted as an educated man with “at least a year or two of college,” and said Ted was well-spoken and articulate. reply] You should have picked up on this and asked what he read - comic books> Tintin?

Thats easily fixed. Im gone. Things should improve now immediately -

Send me his address - betcha don't have it. I betcha it doesn't matter to anyone in the universe but you! Has that ever crossed your mind?

I would contact Fidel Castro. Buenos Nochos.

Since we cant solve the case (due to massive intreference fromthe Govt and wannabes) it occurs to me to ask: is there a Cooper bar drink? I mean a "DBC" or a "Cooper" or some such. ? If not we should come up with one and get it into the lexicon. I knowsome hi profile bar tenders! Here's to ya -

Did you find anything else interesting in this thread?

The Killer Crawafish are in Lousiana. In Washington its Big Foot (3rd cousin of Yeti). In Ioway its da Guppie! Rarely seen. Lives in mud.

Ventral door is rear of plane on bottom of fuselage. See my exit photo attached. If you look up at the DC 9, you can see the open ventral door. I really don't know what happens on side door exits, I just never paid much attention. Nothing perceivable happens on rear exits through BIG tailgate openings, like on CASAs or SkyVans or C 130 Hercs. The DC 9 opening was quite small in comparison. 377 Ive been searching for airflow data or an airflow chart for the 727-200 (especially at the rear) and found nothing. Sorry.

My whoosh thunk isnt very scientific, just trying to approximate the sound and feel of the event. The whoosh seemed to occur as the jumper was transitioning through the hull opening and the thunk happened just after exit. The whole sequence took about 716 milliseconds, which of course is also a guess. You could feel the thunk way forward in the cabin far away from the open ventral door. I never paid much attention to the acoustics of exits prior to this jet jump so I can't really answer your other questions. I remember thinking, as I was still in my seat, "hey, I can count every single jumper exit with my eyes closed." I continued to perceive the whoosh and thunk as I got out of my seat and marched towards the exit with the other jumpers. 377 No I think you did answer the question, well. Two events; Woosh audible as the air engages the guy moving through door - thats turbulence. Thunk (pressure event) "just after exit" just as you said - which is air rushing in to displace the man's volume now moving away from the side of the aircraft. (Its basically like high velocity air rushing to fill a vacuum - slap! You do the reverse of this when you clap your hands. A clap pushes air out quickly. The thunk is air rushing in to fill a volume of mass, where the man's body was at t1. ) Like you said: it takes only 700 millisecs. We could model this nicely. The thunk is hi velocity air moving into to fill a void where the man's body was introduced into the air flow and took up space. But the body is moving away quickly. The void is moving quickly. The air slaps back in to fill the void. All in microsconds. This would create a violent pressure event and Im not surprised you could feel it (hear it) some distance away clear into the hollow of the airplane. This was at the ventral door, you say. What's the ventral door? Front side door? Or rear door? Does the thunk pressure event happen at both doors as a jumper exists? Or only at the side door? sorry for all the questions!

Gleik's Law: There is order within disorder. Very hi probability. Quantum physics and Nature are built on this premise.

Special circumstances can be built into a game model to skew the decision making particular player may do, but generally 'rational decision maker (or player) is defined by a rather broad set of statistical paramaters based on actual sampling of people before hand. Example: if we calculate a random walk involving a walker with one leg longer than the other, then the walk ceases to be random, obviously. And in fact right handed people tend to random walk differently than left handed people. A random game simply serves as a baseline for comparing other games...

On the unpressurized DC 9-21 jet jumpship the cabin had no rushing air at all, very calm even during jumps. The only anomoly was the "whoosh-thunk" mild but very noticeable presure bumps as each jumper exited. 377 So 'woosh-thunk' is one combined event? Thunk is a pressure event? Woosh is an audio event heard bepore the exprience of the pressure event 'thuink'? Can you give a timeline of the two events? How far back in the cavity of the aircraft is this 'thunk' felt? Does this apply to side door and rear exists or just side door exits?

I argued these same points endlessly as a student. My prof just laughed. I said: "people are not rats". He just laughed. It turned out on a statistical basis he was correct. People often are predictable... But I know "exactly" where you are coming from and what you are saying. My prof finally said to be: "your point of view is that of a french rationalist - you are a Humanitarian!". He was a German empiracist and from a mathematical point of view the sob was right! Those classes sobered me up ...

Ckret maintained the "pressure bump" was caused by the stairs flapping back up after C's weight was off the stairs. But we have a second pressure effect caused by people parachuting through open holes in a moving aircraft, whether side hole or rear hole? 377 chime in ??? From standard theory when an object is inserted into a moving fluid a pressure wave is created. The size of the object, speed of insertion and speed of the fluid all affect the magnitude of this wave. If you visualise throwing a pebble into a stagnant body of water it will form circular ripples (pressure waves), do the same into a flowing body of water and they will become elliptical - the point is that the pressure waves travel in all directions and simply get swept along/distorted by the moving fluid. You can hear jumpers leaving any aircraft - how large the pressure wave is and whether instruments detect it is a different matter. I think it is safe to say that the stairs would make a larger impact than a person, and conceivable the two events would merge if it occurred as stated by Ckret. I tried to bring this in using the Bernoulli effect with Ckret and got nowhere. Somebody has the answer! Its an issue of fluid dynamics... The principle is simple. You have a hollow object moving in a fluid. Hi pressure on the outside. Lo pressure on the inside. You introduce a hole. The flow is from inside to out (lo pressure to hi pressure). I tried to argue with Ckret that the minute you opened a hole at the back of the plane there should be a wind rush out - Ckret said No! He said tests confirmed he was correct; that you could sit in the last seat in the airplane with papers on your lap and no air flow would affect the papers in any way. Maybe the critical factors is distance from the hole? It may also be that a side hole is not the same as a hole at the rear of the plane? Fact is however, in the transcripts Scott asks if Tina should be tied in if she goes to assist Cooper opening the rear door? The implication is, she might be sucked out? Pressure difference should be proportional to the velocity of the tube through the fluid. Rate and volume of flow proportional to pressure differential, density of fluid, size of hole ... etc. I think what Ckret was arguing was that the aircraft was not pressurised, so equal pressure inside vrs out. But motion of the tube through the air is what creates a pressure differential across the hole. Anything that affects the size of the hole like a person standing in the doorway has to affect the pressure differential, one would think? Ckret said tests proved this was not the case? Im confused. As I see this we have three effects: (bump) from stairs slamming back up closing the rear hole changing the pressure differential (oscillations) not sure that was ever nailed down... (swoosh) change in pressure differential from a large object exiting the plane like someone parachtuing out the plane ... One effect of the above was actually felt in the ears by the crew sometime around 8:11 (PI Tr). [edit]: One thing is obvious. Smooth airflow across the uniform surface of a tube and introducing a hole changes the surface slightly but does not disturb the smooth flow over and around the hole radically, especially at the velocity of 200 mph? Now: the minute a person stands in the doorway and espcially if leans out, that changes the SURFACE over which air is flowing, that means turbulence. If the person leaves the plane, for the split second the person is still close to the plane the person constitutes an obsticle to airflow, ie turbulence. The pressure wave from the person must interact through the doorway with the pressure differential inside the plane? Swoosh sound. Pressure wave felt inside? At the rear of the plane is has to be different. The rear of the plane in motion has to be sitting in a lower pressure zone compared to a point on the sides of the plane? So a person leaving the rear creates less turbulence felt back inside the plane, resulting in oscillations?? Ckret was clear: the pressure bump was from the slamming shut of the stairs and door which closed the rear hole, as distinct from oscillations with the door open ....